Transcribing apparatus



ay 4, 1937- c. G. LIGH 2,079,515

TRANSCRIBING APPARATUS Filed Dec. 28, 1935 Patented May 4, 1937 PATENTOFFICE TRAN SCRIBING APPARATUS Charles G. Ligh, New Dorp, N. Y.,assignor to Electreporter, Inc., a corporation of Delaware ApplicationDecember 28, 1935, Serial No. 56,555

11 Claim.

This invention relates to play back or reproducing mechanism ofelectrically recorded records of plate or disc type. The object of theinvention is to provide a means whereby a transcribing typist may haverepeated or replayed a portion of what is recorded upon such a discrecord without braking or stopping either the disc or the rotary tableupon which it revolves.

In transcribing from such disc, the typist, in the interest of accuracy,or for any other reason incident to his work, frequently finds itnecessary to play back a repeat of a phrase, or one or several sentencesimmediately preceding the matter at the immediate point on the recordwhich he has reached in the transcribing.

It has been found in practice that braking will not accomplish this,since if the disc is braked, it will stop at a point beyond that whichis desired to hear repeated. To brake or stop the disc and then lift thereproducing needle from the groove and manually place it in a groovewhich has already been played so that it may be repeated, involves lossof time and the possibility of skippage if the needle be returned to apoint on the disc further than that already transcribed.

I have therefore provided a means of electrically throwing thereproducing needle back laterally one or more grooves in the record,without either stopping the disc or lifting the needle therefrom. Inthis manner I accomplish the desired result and overcome thedisadvantages hereinabove set forth, in a simple, efdcient, andpractical manner.

The invention will be more clearly understood from the followingdescription of the now preferred embodiment thereof as illustrated inthe drawing in which 2 Figure l is a top plan view more or lessdiagrammatic of a disc -record and its sound groove, and of a reproducerarrracarrying in addition to the reproducer, a means according to thepres ent invention;

Figure 2 is a top plan view of said record, said reproducer arm, saidreproducer and said means; and

Figure 3 is a sectional view taken through said arm just in back of saidreproducer and said means and showing details of construction of saidmeans and certain preferred adjuncts.

Similar reference characters refer to similar parts throughout severalviews of the drawing.

Since the record 5, which may be rotated on the usual table 6 is of thetype wherein the beginning of the sound groove 1 is toward the centerrather than near the outer edge of the record, and since with the soundgroove as illustrated the record 6 rotates in the direction of the arrowa, the reproducer 9 is shown as presenting its needle at an inclinationto the sound groove so as to slip along the same without digging into itduring rotation of the record. A means of moving the needle when desiredto a part of the record previously passed over so that such part of therecord can be repeated, is also preferably inclined to the plane of therecord but differently from the inclination of the needle. According tothe record here shown as above described, the reproducer for such repeatwill be moved past one or more convolutions or lines of the soundgrooves toward the center of the record. I have found that acomparatively slight jolt to a part connected with the reproducer I inthe direction last indicated will sufice if a fairly light weightreproducer is employed, such for instance as that known as the crystaltype. This statement is not made to indicate that the comparativelyslight jolt must necessarily be used, but merely to make plain that sucha jolt-applying means as that which will next be described can beemployed in carrying out the invention.

This jolt-applying means can be actuated at will in any desired way andby any suitable energizer, such, for instance, as is now preferred,electrically and magnetically.

This electrical means comprises a solenoid it having an inclinationshown on the reproducer arm. This solenoid has its armature I2 normallyresting by gravity on its bottom plate I3. This plate It may be providedwith a rubber pad It against which the armature noiselessly comes torest when it stops at being snapped upward to strike the top plate It onthe solenoid. The striking of the upper end of the armature against thisplate Mi imparts a jolt which throws the reproducer needle laterally ofthe lines of the down groove when a play back is desired. This action ofthe solenoid occurs whenever a switch I in a circuit I6 is closed, suchcircuit including a solenoid and a suitable source ll of electricalcurrent.

In order that the operator may vary the jolt thereby to vary the amountof repeat desired, there is introduced in said circuit a variableresistance It, the setting of which resistance will of course controlthe force of the blow directed by the armature I2 against the top ofplate I4 whenever the switch I5 is closed.

I claim:

1. In apparatus of the class described having a rotatable disc recordprovided with a sound groove and movable reproducing means in operativerelation to said groove; means operable to jolt said reproducing meansout of engagement with the record in a direction upwardly and toward thestarting position of the reproducing means so that the reproducing meanswill engage another portion of the groove for play back.

2. In apparatus of the class described having a grooved sound record andreproducing means having a stylus engaging the said groove and movablethrough travel of the stylus in said groove, and means operable to joltsaid reproducing means to move the stylus from one location in saidgroove to another location in said groove closer to its startingposition for playback.

3. In apparatus of the class described having a grooved sound record, anarm movable relatively to the record carrying reproducing means having astylus engaging the groove, and means carried by the arm operable tojolt said reproducing means to move the stylus from one location in saidgroove to a location in said groove closer to its starting position forplay back.

4. In apparatus of the class described having a grooved sound record andreproducing means having a stylus engaging the said groove, an upwardlymovable jolting element carried by the reproducing means, means on thelatter means above the jolting element for'impact by the latter to movethe reproducing means to move the stylus from one location in saidgroove to another for playback, and means operable to move the joltingelement.

5. In apparatus according to claim 4 in which the jolting element onupward movement also moves toward starting position.

6. In apparatus according'to claim 4, a cushion beneath the joltingelement and. engageable thereby.

'I. In apparatus of the class described having a grooved sound recordand reproducing means having a stylus engaging the said groove, an armcarrying the reproducing means, a solenoid on said arm, a movable corein said solenoid, a part associated with the solenoid adapted forjolting abutment by said core to impart a jumping movement to thereproducing means to move the stylus from one location in said groove toanother location in said groove for play back, and means operable toenergize the solenoid.

8. In apparatus according to claim 7 wherein the longitudinal axis ofthe solenoid and core are inclined toward the starting position of thestylus.

9. In apparatus of the class described having a grooved sound record andreproducing means coacting with said groove, and means associated withthe reproducing means operable to impart a jumping movement thereto tomove it nearer starting position for playback.

10. In apparatus of the class described having a grooved sound record,an arm, reproducing means on said arm coacting with said groove,

and means operable to cause the arm and reproducer means to jump in itsentirety closer to starting position for play back.

11. In apparatus of the class described having a grooved sound record,an arm movable relatively to the record carrying reproducing meanshaving a stylus engaging the groove, a solenoid on said arm inclinedtoward the starting end of the groove, a core longitudinally movable inthe solenoid, a cushion at the base of said core, abutment meansengageable by the core through upward movement to jolt said arm andreproducing means to jolt the reproducing means to cause the latter tojump to dispose the stylus.- in another portion oi. the groove forplayback; and means operable to energize the solenoid.

CHARLES G. LIGH.

